23122420434 has 128 divisors (see below), whose sum is σ = 54307411200. Its totient is φ = 7282690560.

The previous prime is 23122420411. The next prime is 23122420483. The reversal of 23122420434 is 43402422132.

23122420434 is a `hidden beast` number, since 2 + 3 + 1 + 224 + 2 + 0 + 434 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 23122420398 and 23122420407.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22690777 + ... + 22691795.

It is an arithmetic number, because the mean of its divisors is an integer number (424276650).

Almost surely, 2^23122420434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23122420434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27153705600).

23122420434 is an abundant number, since it is smaller than the sum of its proper divisors (31184990766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23122420434 is a wasteful number, since it uses less digits than its factorization.

23122420434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 23122420434 its reverse (43402422132), we get a palindrome (66524842566).

It can be divided in two parts, 23122 and 420434, that added together give a square (443556 = 666²).

The spelling of 23122420434 in words is "twenty-three billion, one hundred twenty-two million, four hundred twenty thousand, four hundred thirty-four".